This is for a portable Survival Kit, not a list of stuff you’d have in your bunker.
I’m making mine this weekend and I’m trying to see if there’s anything I forgot.
Ibhietala – I figured i’d have one in a pack in the house and one for the car – because in all honesty, I doubt i’d be able to get very far in a car (I live in the middle of the city of Los Angeles). And that way if I do manage to get into my car and actually get out alive, i’d have double the supplies (the pack I grabbed from my house as well as the pack I had in the car).

Bandanas. They can be used as bandages, napkins, halter tops, whatever.
3/8" solid braid nylon rope. Just strong enough to hold my weight, but light enough to be useful for other things too.
Iodine tablets for water purification. Can also be mixed extra-strong for disinfecting injuries.
Salt. Repels voodoo zombies.
Knife.
Hatchet.
Sharpening stone.
50′ 1/16" stainless steel cable. Tripwires, animal snares, etc.
A box or two of ammo for my pistol (which stays on my hip, not in the container)

My survival kit container is a 1987 Jeep Wrangler with the straight-six engine, a hard top, an extra spare tire, and four 5-gal. fuel cans tucked in the back.